Failed to decrypt a column encryption key using key store provider: 'MSSQL_CERTIFICATE_STORE'

This error appears when viewing the NES System Diagnostics page, as shown in the following figure:


The SQL database was hardened but the Application Pool Identity that was defined during the NES deployment was not set to LocalSystem.


  1. Run the NES installation wizard.
  2. On the IIS tab, from the Application Pool Identity list, select LocalSystem.
  3. On the Install tab, select Apply Settings.
  4. Connect to the console and click About
  5. Click View Full System Diagnostics, and confirm that the error does not appear in the Database section.

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